Alfred pasqueau



A. PASQULAU. Clough-Dampr Sluce-Weir'. No. 225,533.

Patented Mar. 16 1880.'

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ALFRED PASQUEA'U,

Artnr FFCE@ or LYoNs, runnen.

CLOUGH-DAiVi OR SLUICE-WEIR.

SPECIFICATION forming part of Letters Patent No. 225,533, dated March 16, 1880.

Application iled January 19, 1880.

To all whom it may concern Be i t known that I, ALFRED PASQUEAU, of the city of Lyons, in the Department of the Rhone, and Republic of France, have invented a certain new and useful Improvement in Clough-Dams or Sluice-Weirs; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a sectional side elevation illustrating the application of my invention. Fig. 2 is a top or plan view of the sliding shutterbrace abutment, and Fig. 3 is a longitudinal vertical section of the same through line in Fig. 2.

Similar letters of reference indicate corresponding parts in all the iigures.

Myinvention has relation to movable cloughdams or sluices used in rivers or channels for the purpose of causing overilow by damming up the water, or for the purpose of increasing the depth ol' water in the river or channel at any given point or points.

As heretofore constructed this class of dams consists of a series of detached shutters placed in a line with each other transversely across the channel or river, and hinged at their lower ends to sills or piers which are embedded in.

to or built up from the channel or river-bed, and which are therefore liable to obstruct navigation and impede the flow of the current when the dam is down.

My improvement consists in the construction and arrangement ot' a channeled abutment provided with a series of steps or shoulders forming inclined planes leading from one to the other, and which operates in combination with detachable shutters hinged by their middle to supports or braces, the lower free ends oi' which are adjustable in the channels or grooves of the abutment, and impinge upon its steps or shoulders, substantially as hereinafter more fully described. l

In the annexed drawings, A, Fig. l, represents the riverbed or bottom, and C C the sectional dam or shutters, one of which is shown up and the other down. The number of these shutters, which are all of equal width and height, will, of course, depend upon the width of the water-course which is to be dammed up. Each of the shutters C is hinged by its middle to a brace, D D, and is provided with a supplemental support or double brace, E E, the" lower end of which is hingedin bearings c, embedded in the river-bottom.

It will be observed that both ends of the shutters C G are free, and that their lower ends, in raising them into avertical or approximately vertical position, will abut against a shallow step or sill, B, inthe river-bed. A suitable distance in front of this sill I place my abutment, which is denoted by the letter F, and is held firmly in the river-bed by its downward projecting Y dovetailed transverse 'danges ff, which may, however, sometimes be dispensed with where the river-bed is of a nature to admit it. This abutment, as will be seen more clearly by reference to Figs. 2 and 3 or" the drawings, consists of a series of inclined planes, a b c, forming a series of steps or shoulders, (denoted by a b c,) the part or section a sloping off laterally or sidewise past the next sections, b and c, `anddivided from the latter by a ridge or flange, t', leading into the groove or channel d', while the inclined planes b c, in regular succession, open up into the parallel groove or channeld.

Reference being now had to Figfl of the drawings, the operation of my invention will readily be understood. rBhe shutters to be raised into position to form the dam are stepped against the sillB by means of the breechchains g 7L, which are operated by means of a windlass, H, placed on top of the derrick Gr. It is obvious that instead of this derrick a traveling crane (operating one or more shutters at a time) may be used 5 or a oating 4derricl; may be employed, it' desired. Other chains are suitably arranged and operated by the windlass for the purpose of bringing the top end of the shutters into proper position; but these chains are relieved from all strain by means of the braces E D E D', and the inclination of the shutters (by which the depth of Water is, of course, regulated) is adjusted by means of the braces D D' and stepped abutment F. It' it is desired to lower the shutter into the position shown at C', it is rst IOO raised until its brace D slips, With its lower end, out over the inclined plane b into the channels or grooves a d', Within which it Will gradually assume a horizontal position, being guided into the converging channel or groove d, when it is again in a position `to be raised through the inclined planes c b, With their stops or abutments, which regulate the pitch or inclination of the shutter.

1t Will thus be seen that no chains or other operating devices are necessary at the braces -D D', which are operated automatically by the shutters and the stepped and channeled abutment F, in the manner described.

Having thus described myinvention, I claim and desire tosecure by Letters Patent of the y United States- 1. The abutment F, provided with a series of inclined planes, a b c, having steps or shoulders a b c', and grooves or Ways a d d, subzo ALFRED PASQUEAU.

Witnesses M. GIVVING, G. KLEIN. 

